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This work carried to investigate the effect of using Sesbania sesban seeds (SS) in goat's diets on nutrients digestibility, some rumen parameters and growth performance Zaraibi kids. Twenty Zaraibi kids ( average 16.0 kg live weight and 4 to 5 months old) were divided into 4 groups (5 kids each). The control group (G1) was fed a ration consisting of concentrate feed mixture and corn silage according to NRC (1981) recommendation. Sesbania sesban seeds was used to replace 10, 20 and 30% of concentrate's protein for groups G2, G3 and G4, respectively. The feeding trails lasted 14 weeks. In addition, three male Zaraibi goats of each group were involved in digestion trail to evaluate the feeding value of the tested diets. The obtained results showed that the daily feed intake tended to decrease (71.31, 69.74, 68.27 and 66.99 g / kg0.75 ) as a result to substitution of concentrate feed mixture ( CFM) with Sesbania seeds (SS) in goat's rations (G1, G2, G3 and G4, respectively). In the sametime, the daily water consumption as ml/g DM intake was slightly higher with increasing Sesbania seeds in the rations. As regard to ruminal parameters, the effect of the tested experimental rations on ruminal pH values and ammonia-N concentration were not significant. But, ruminal total VFA's and microbial protein content during 3 and 6 hrs post-feeding were significantly higher (P<0.05) with G2 compared with G4. Similarly, molar proportion of ruminal VFA's showed higher acetate and propionate but lower butyrate with G2 than other groups. The obtained results indicated also that most tested blood parameters were not significantly affected by tested rations. The digestion coefficients of most nutrients (DM, OM, CF, NFE and EE) and feeding values ( TDN and DCP) were not significantly affected by the tested rations. However, the highest values of digestibility of all nutrients and feeding values were recorded with G2. Daily body gain recorded the highest value ( 77.16 g) with G2 followed by G1 (75.72 g) then G3 (74.50g) and lastly G4 (71.82 g) and the differences were not significant. The feed conversion efficiency, based on DM and DCP, was better (8.51 and 0.77, respectively ) with G2 in comparison with the other groups. Moreover, the values of feed conversion as TDN were also better with the three tested rations ( 5.81, 5.77 and 5.82 for G2, G3 and G4, respectively) than with control ( 5.97). Moreover, the economic efficiency was noticeably higher ( 1.86, 2.02, 2.09 and 2.17%) with increasing Sesbania El-Kholany, M. E. et al. 748 seeds levels (0, 10, 20 and 30%) in the goats rations (G1, G2, G3 and G4, respectively). Accordingly, Sesbania sesban seeds could be used as a source of protein for feed, to replace up to 30% of CFM protein in goats rations since it did not have negative effect on feeding value and growth performance.

journal of animal and poultry production (print)

GROWTH PERFORMANCE, SOME RUMEN PARAMETERS AND BLOOD PROFILE OF MALE ZARAIBI GOATS FED DIETS CONTAINING SESBANIA SESBAN SEEDS AS A NEW SOURCE OF PROTEIN.